Aside from new phones, HTC also used Mobile World Congress to unveil new APIs, part of its HTC OpenSense SDK. The new set of developer tools includes Beats Audio API, Lockscreen API, Mobile Device Management API and soon a HTC MediaLink HD API — using which developers are able to enhance the audio experience of their apps, integrate access to an app from the HTC lock screen, and/or enable their app to take advantage of dual screen capabilities using Wireless HDMI.

Of course, only users with select HTC phones will be able to take advantage of these features, while the rest of the world will get the “default vanilla” experience. So in order to entice more developers to jump on board, HTC also offers some marketing incentives, promising to feature apps using HTC APIs on its various channels such as HTC HUB.

While you wait to get the updated SDK, you can check out the Application Showcase, from where you can get a sampling of the possibilities when you review some of the best apps already integrated with OpenSense APIs…